53813549 has 2 divisors, whose sum is σ = 53813550. Its totient is φ = 53813548.

The previous prime is 53813509. The next prime is 53813581. The reversal of 53813549 is 94531835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 6300100 = 6893^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 53813549 - 2⁸ = 53813293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53813509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26906774 + 26906775.

It is an arithmetic number, because the mean of its divisors is an integer number (26906775).

Almost surely, 2^53813549 is an apocalyptic number.

It is an amenable number.

53813549 is a deficient number, since it is larger than the sum of its proper divisors (1).

53813549 is an equidigital number, since it uses as much as digits as its factorization.

53813549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 53813549 is about 7335.7718748609. The cubic root of 53813549 is about 377.5407882480.

The spelling of 53813549 in words is "fifty-three million, eight hundred thirteen thousand, five hundred forty-nine".